B) Park County, Wyo., which includes part of Yellowstone National Park.

C) Hinsdale County, Colo., 95 percent federal land.

D) Piscataquis County, Maine, with Mount Katahdin.

The answer, according to a new analysis of roads and people, is C) Hinsdale.

The southwest Colorado county, the U.S. Geological Survey says, has more wild and roadless land per capita than anywhere else in the contiguous U.S.

Kings County, N.Y. – better known as Brooklyn – has the least roadless land per capita.

Hinsdale also is one of the few places a person can wander more than 10 miles from a road, according to the study in today’s edition of the journal Science.

“Well, that might be a selling point for tourism, which we really need,” said County Clerk Linda Pavich Ragle, reached in Lake City, population 375 and the Hinsdale County seat.

The USGS’s Raymond Watts, in Fort Collins, spearheaded the new mapping technique.

For every point in the continental United States, Watts’ team calculated the distance to the nearest road and used that information to paint a three- dimensional picture of the country that reflects roadlessness.

That leads to the baffling presence of peaks southeast of Greeley and the flatness of the hilly but road-rich Front Range.

The technique solves a vexing mapping problem – two-dimensional roadless maps don’t capture the difference between wild land 2 miles from a road and land 10 miles away, Watt said.

In his maps, such spots have different altitudes.

“The downside of our work is that for many people, it’s hard to get their head around the idea of volume, roadless volume,” Watts said. “You have to make this leap in your head to our imaginary world.”

The new analyses come as Colorado and federal officials are struggling to figure out the future of about 4.4 million acres of “roadless” land in Colorado – land designated a candidate for wilderness but not yet protected from oil and gas exploration, mining or ski-area expansion.

Under former Gov. Bill Owens, a state task force created a plan for those areas, which would allow some activities – such as grazing – but restrict others, including new roadbuilding for oil and gas exploration.